PM125SH-150M Equivalent & Substitute Parts

Part Overview

The PM125SH-150M is a 15 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 3.3 A continuous current with a maximum DC resistance of 30 mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part features ferrite core construction with ±20% inductance tolerance and operates across the temperature range of -30°C to 100°C in a nonstandard surface mount package measuring 12.50mm × 12.50mm × 6.50mm (max height).

Substiute Parts

PM125SH-150M

Bourns Inc.In Stock: 1122PM125SH-150M Datasheet

Current PartRFQ

SRR1260-150M

Bourns Inc.In Stock: 1710SRR1260-150M Datasheet

DirectRFQ

SRR1205-150ML

Bourns Inc.In Stock: 958SRR1205-150ML Datasheet

SimilarRFQ

SRR1206-150ML

Bourns Inc.In Stock: 1350SRR1206-150ML Datasheet

SimilarRFQ

SRR1208-150ML

Bourns Inc.In Stock: 6157SRR1208-150ML Datasheet

SimilarRFQ

B82477G2153M000

EPCOS - TDK ElectronicsIn Stock: 2078B82477G2153M000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM125SH-150M is determined by the following critical parameters: inductance value (15 µH), inductance tolerance (±20%), core material (ferrite), shielding requirement (shielded), and mounting type (surface mount). All substitute parts must maintain the same inductance specification and tolerance band to ensure circuit functionality. Current rating and DC resistance are secondary selection criteria; substitute parts with equal or higher current ratings and equal or lower DC resistance values are electrically compatible. Physical dimensions and height are tertiary considerations for mechanical fit validation. The substitute parts identified below meet the primary electrical requirements while offering improved product status and compliance certifications compared to the obsolete PM125SH-150M.

Parameter Comparison

Engineering Selection Recommendations

SRR1260-150M is the primary direct substitute for the PM125SH-150M. This part maintains identical inductance and tolerance specifications while offering superior current rating (5 A versus 3.3 A), lower DC resistance (27 mOhm versus 30 mOhm), and active product status with ROHS3 compliance. The extended operating temperature range (-40°C to 125°C) provides broader environmental coverage. This substitute is recommended for applications where the original 3.3 A rating is adequate or where higher current capacity provides design margin.

B82477G2153M000 from EPCOS - TDK Electronics provides an exact electrical match to the PM125SH-150M with identical current rating (3.3 A) and DC resistance (30 mOhm). This part is active and ROHS3 compliant with an extended operating temperature range (-55°C to 125°C). Physical dimensions differ slightly (12.30mm × 12.30mm × 6.00mm versus 12.50mm × 12.50mm × 6.50mm), requiring mechanical fit validation. This substitute is suitable for applications requiring precise electrical equivalence with improved compliance status.

SRR1208-150ML offers a balanced alternative with 4 A current rating and 36 mOhm DC resistance, providing improved performance margins over the original part while maintaining active status and ROHS3 compliance. The extended temperature range and higher current capacity make this suitable for designs requiring enhanced thermal and electrical headroom.

SRR1206-150ML and SRR1205-150ML are compatible substitutes with lower current ratings (2.8 A and 2.7 A respectively) and higher DC resistance values (42 mOhm and 70 mOhm). These parts are suitable only for applications where the original 3.3 A specification provides design margin and where the increased DC resistance is acceptable for circuit performance.

Frequently Asked Questions (FAQ)

Q: Can SRR1205-150ML be used as a direct replacement for PM125SH-150M?

A: SRR1205-150ML maintains the same 15 µH inductance and ±20% tolerance, but the current rating (2.7 A) is lower than the original specification (3.3 A) and DC resistance is significantly higher (70 mOhm versus 30 mOhm). This substitute is compatible only if the application operates below 2.7 A and the increased DC resistance does not degrade circuit performance.

Q: What is the primary advantage of SRR1260-150M over the PM125SH-150M?

A: SRR1260-150M provides superior electrical performance with higher current rating (5 A), lower DC resistance (27 mOhm), and active product status with ROHS3 compliance. The extended operating temperature range (-40°C to 125°C) also supports broader environmental applications.

Q: Are there mechanical compatibility concerns when substituting B82477G2153M000?

A: B82477G2153M000 has slightly different physical dimensions (12.30mm × 12.30mm × 6.00mm) compared to the PM125SH-150M (12.50mm × 12.50mm × 6.50mm). Mechanical fit must be validated in the target application, particularly regarding PCB layout and component clearances.

Q: Which substitute part offers the best compliance profile?

A: All substitute parts listed are ROHS3 compliant and REACH unaffected. B82477G2153M000 provides the widest operating temperature range (-55°C to 125°C), while SRR1260-150M, SRR1206-150ML, SRR1208-150ML, and SRR1205-150ML all support -40°C to 125°C operation.

Q: Can higher current-rated substitutes be used in place of the PM125SH-150M?

A: Yes. SRR1260-150M (5 A) and SRR1208-150ML (4 A) have current ratings exceeding the original 3.3 A specification and are electrically compatible. Higher current capacity provides design margin and does not compromise circuit functionality when inductance and tolerance specifications are maintained.

Q: What packaging formats are available for substitute parts?

A: SRR1260-150M is supplied in Cut Tape (CT) and Digi-Reel format. SRR1205-150ML, SRR1206-150ML, and SRR1208-150ML are supplied in Tape & Reel (TR) format. B82477G2153M000 is supplied in Tape & Reel (TR) format. Packaging selection depends on production volume and assembly requirements.